I keep seeing the same ask: how do I test a Polymarket idea before I put money on it?
Most answers point at one of three things. A live simulator with fake cash on live odds. A Python backtest notebook. Or a dashboard that never quite says stop.
I wanted a fourth option: type the idea in English, run it on resolved history, and get a verdict I could read without translating a log. Keep. Kill. No edge. Inconclusive.
That product is OddSage — https://oddsage.com
What it is
OddSage is paper-only Polymarket research. No live trading. No wallet. No copy-trade execution.
Two ways in:
Paste a Polymarket URL. You get a Market Dossier — a research page for that market, not an order ticket.
Type the idea in English. The builder drafts a strategy. You read the draft. Save and run.
The loop is: English idea → draft → Save & run → verdict.
What the verdicts mean
Keep: the paper test left something worth holding. Still paper. Not a live order.
Kill: it did not survive.
No edge: it ran and still looked like noise.
Inconclusive: not enough evidence. That is a stop, not a soft keep.
A tool that only ever says “interesting” is a mood board. I wanted one that would kill an idea.
What it is not
It is not a live virtual wallet. If you want to practice clicking on live odds with play money, use a simulator. That is a different job.
It is not a Python SDK. If your edge already lives in a notebook with L2 replay, keep that workflow. OddSage is for people who have a sentence and want a keep/kill without opening a repo.
It will not copy another trader onto your book. It will not place the trade if the verdict is keep.
A public kill
I am not going to invent a win rate for a launch post. Here is a finished public paper-test that did not get a pass:
https://oddsage.com/strategy/259bc179-04dc-4e6d-816d-59d8f3cb52cc
If a tester never shows a kill, it is selling hope.
Why I am posting this on DEV.to
Because the SERP for “polymarket strategy tester” and “test polymarket strategy” is full of Python tutorials and sim waitlists, and the category still needs a clear paper-only option that admits failure.
Tagline I keep using: Test your Polymarket idea before you risk real money.
Product pages if you want the job by name:
https://oddsage.com/polymarket-strategy-tester
https://oddsage.com/test-polymarket-strategy
https://oddsage.com/polymarket-paper-trading
I’m Avinash Jetwani. On X: @jetwaniavinash
If it dies, it dies on paper.
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